To solve \( \frac{1}{2} + \frac{2}{5} \), we need to find a common denominator.

1. The least common denominator (LCD) between 2 and 5 is 10.
   
2. Convert each fraction to have a denominator of 10:
   \[
   \frac{1}{2} = \frac{5}{10} \quad \text{and} \quad \frac{2}{5} = \frac{4}{10}
   \]
   
3. Now, add the fractions:
   \[
   \frac{5}{10} + \frac{4}{10} = \frac{9}{10}
   \]

So, \( \frac{1}{2} + \frac{2}{5} = \frac{9}{10} \).

Would you like more details or have any questions?

Here are some related questions to practice:
1. What is \( \frac{3}{4} + \frac{2}{5} \)?
2. How do you subtract \( \frac{5}{6} - \frac{1}{4} \)?
3. What is \( \frac{7}{8} + \frac{3}{16} \)?
4. How do you multiply \( \frac{2}{3} \times \frac{4}{5} \)?
5. What is the result of dividing \( \frac{3}{7} \div \frac{2}{5} \)?

**Tip:** When adding or subtracting fractions, always find the least common denominator for easier calculation.

Learn how to solve the fraction addition problem 1/2 + 2/5 using the least common denominator method. This detailed step-by-step explanation covers key concepts such as finding the LCD and adding fractions with common denominators. Ideal for students in Grades 5-7.

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